AI code review startup CodeRabbit secured $143 million in Series C funding co-led by Atomico and Smash, reaching a $1.5 billion valuation. The round comes less than a year after the company raised $60 million in Series B.
CodeRabbit, an AI-powered code review platform, announced the Series C funding on Wednesday. Atomico and Smash led the investment round, which brings the startup's total capital raised to $263 million following its $60 million Series B in September 2025.
The $1.5 billion valuation reflects investor confidence in the AI code review market, where automation tools are increasingly adopted by software development teams. CodeRabbit positions itself as an alternative to manual code reviews, using machine learning to identify potential bugs, security issues, and code quality improvements.
The rapid succession of funding rounds—$60 million in September 2025 and $143 million now—indicates strong revenue growth and market traction. The startup has likely demonstrated significant adoption among development teams looking to streamline their review processes.
Atomico and Smash's participation suggests institutional backing from experienced venture firms. Atomico, known for backing European tech companies, has invested in several AI infrastructure plays. Smash, meanwhile, focuses on B2B software solutions.
The funding will likely accelerate CodeRabbit's product development, sales expansion, and market penetration. AI-assisted code review tools have gained momentum as engineering teams grapple with code quality at scale, making the market window favorable for entrants with proven technology.
CodeRabbit joins a growing cohort of AI development tools securing substantial funding. The broader category—including CI/CD platforms, testing automation, and code analysis tools—continues to attract investor interest as enterprises prioritize developer productivity and code safety.
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Skan AI, a startup building a "context graph of work" through enterprise software monitoring, secured $63 million in Series C funding co-led by Cathay Innovation and Dell.
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